[gnome-shell] layout: invert isGreeter check

[Ray Strode <halfline src gnome org>]

commit 905c4932d144252455fd9719b9ab51c7a6429045
Author: Ray Strode <rstrode redhat com>
Date:   Tue Feb 19 20:21:06 2013 -0500

    layout: invert isGreeter check
    
    I somehow lost an exclamation point.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=694227

 js/ui/layout.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/js/ui/layout.js b/js/ui/layout.js
index b03f906..bf23034 100644
--- a/js/ui/layout.js
+++ b/js/ui/layout.js
@@ -605,7 +605,7 @@ const LayoutManager = new Lang.Class({
         this._consoleBackgroundGroup.destroy();
         this._startingUp = false;
 
-        if (Main.sessionMode.isGreeter)
+        if (!Main.sessionMode.isGreeter)
             this._createSecondaryBackgrounds();
 
         this.emit('panel-box-changed');